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Green circuit board with black memory chips, no heat spreader, 288 gold pins along bottom edge

NEMIX RAM

NEMIX RAM 16GB DDR4 2666MHz ECC UDIMM 2Rx8 CL19 1.2V ASUS WS C246M PRO/SE memory upgrade

SKU CH-33RS-0D06S

16GB DDR4 2666MHz ECC UDIMM, CL19 1.2V, validated for ASUS WS C246M PRO/SE workstation boards

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Size 16GB

  • 16 GB ECC memory protects workstation data integrity
  • Exact DDR4 2666 MHz spec matches ASUS WS C246M PRO/SE requirements
  • 2Rx8 unbuffered UDIMM installs directly in 288-pin slots
  • 2 V CL19 timing runs at rated speed without tuning
  • Lifetime replacement warranty covers the module for its service life

Targeted ECC upgrade for ASUS workstations

This 16 GB DDR4 2666 MHz module is built for the ASUS WS C246M PRO and WS C246M PRO/SE motherboards. It delivers error-correcting code memory that detects and corrects single-bit errors on the fly. The unbuffered 2Rx8 design matches the board's native memory controller expectations. It suits professionals who need data integrity for compute workloads.

Straightforward DIMM installation

The 288-pin UDIMM seats in the standard DDR4 slots without tools or cables. Because the board enforces a specific DIMM population order, you must follow the manual's slot sequence exactly or the system will not post at full capacity. A common mistake is mixing this unbuffered ECC stick with registered DIMMs, which prevents boot. The module has no heat spreader, so clearance is never an issue.

Verify board revision

Confirm your motherboard model is exactly WS C246M PRO or WS C246M PRO/SE, as other C246 boards may have different memory maps. Check the manual for the supported maximum capacity per slot and the approved population order for 2Rx8 modules. Ensure the BIOS is updated to a version that recognises 16 GB unbuffered ECC DIMMs at 2666 MHz. This kit contains a single 16 GB stick.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $125.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.87 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Memory
Model nameDDR4 ECC Unbuffered UDIMM Memory
Part numberME21300-628K1
Total capacity16 GB
Product type288-Pin DDR4 ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASUS
In the box
Included items16 GB DDR4 2666 MHz PC4-21300 2Rx8 1.2 V 288-PIN ECC UDIMM KIT

Other versions of this model

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Questions about this item

How can I confirm the 16GB DDR4-2666 module is running at 2666MHz with CL19 after installation?

Enter the UEFI/BIOS on the ASUS WS C246M PRO/SE and check the memory information screen; it should report 2666 MT/s, 1.20 V, and CL19 timings for the installed DIMM.

What exactly ships in the package and is anything else required to use it?

The box contains one 16GB 288-pin DDR4 ECC UDIMM (2Rx8, 1.2 V, CL19). No cables, brackets, or additional parts are needed — just an available UDIMM slot on the motherboard.

Which version should I choose if my board manual lists both 1Rx8 and 2Rx8 population rules?

This kit is a 2Rx8 module; follow the motherboard manual’s 2Rx8 population order to ensure the system recognises the full 16 GB at the rated 2666 MT/s speed.

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